Решите уравнение: х(x² + 2х + 1) = 2(х + 1)
X(x+1)² = 2(x+1) (x+1)² - 2(x+1) = 0 (x+1) * (x²+x-2) = 0 x+1 = 0 x= - 1 x²+x-2 = 0 D = 1+8 = 9 = 3² x = -1 +3 / 2 = 1 x = -1-3 / 2 = -2 Ответ x= -1 x= 1 x = -2